I buy tinned dog food that is in a solid loaf. I then dice it up into small cubes and mix it through all of their veggies. That way I know that they're eating SOME of the tinned food at least lol
Some of them LOVE it and will actually eat large chunks off a teaspoon lol
And in every meal my guyes get endive and tinned food, but each week I alternate which fruits I buy for them so that they get a little bit of everything

My adults get the above every second day and the bubs get it once a week and insects every day.
Bex